yep - i have biked trail's down to hayfield - well there are several
e.g. Jacobs Ladder from Edale (but thats not a green lane)
but one I guess you mean - Royce Clough ? (that comes off Mam Tor) has big rock ledges, and i have fallen off the bike before trying to cycle up them!.
if fact. heres a pic taken of the fall 10yrs ago... on the Royce clough steps, i think some of the track has since been repaved due to erosion? as it was closed for a while
and success
and my Mrs on the trail into hayfield from jacobs ladder - in 2004
last time we saw a some spots of oil and a big scrape on one of the rock steps, then a trail of oil for 20metres, then a big pool of oil!, then no more!
smelt like diff-oil...
used to live in Leeds, and mountain bike and climb in peaks at weekends,
now i want to go back and play in the landcruiser, but live in NE Scotland now.... but have a brother living and working as vet near hayfield, marple i think, so will have to go and visit him!